Prey of Darkness

From the front cover:

"Brigands are terrorizing the Elephand lands. Dare you enter their haunted stronghold to bring them to justice? Or are you bad enough to join them? The decision is yours!"

From the web:

 Prey of Darkness is a Universal Playing aid which details a force of brigands and their advisors, followers, and slaves.  Each of the brigands has a price on his or her head.  You have been charged with their capture!  Can you bring them back to face trial alive, or must you kill them in order to collect the reward?  Can you even survive the attempt?  Send your heroes and heroines in search of Red Honohon and Black M'Dabb.  This scenario can also be used for evil characters that need manpower to accomplish their goals.  Join Red and Black in their endeavors to become rich and powerful.  Become a brigand and terrorize the countryside!  Challenge Red and Black for the leadership of the brigand force!  All this and more await you!